Keyboard



FIG. 1 is a front perspective view of a keyboard;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a front side elevational view thereof;

FIG. 6 is a back side elevational view thereof; and,

FIG. 7 is a bottom plan view thereof. 

We claim the ornamental design for a keyboard, as shown. 